Test action by building Hugo docs site (#1)

.dockerignore

@@ -0,0 +1,7 @@
+# Ignore all files...
+*
+
+# ...except readme and licenses:
+!LICENSE.md
+!README.md
+!THIRD_PARTY_NOTICE.md

.github/workflows/build-docs.yml

@@ -0,0 +1,22 @@
+name: Build docs
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout action
+      uses: actions/checkout@master
+      with:
+        fetch-depth: 1
+    - name: Checkout gohugoio/hugoDocs
+      uses: actions/checkout@master
+      with:
+        repository: gohugoio/hugoDocs
+        path: docs/
+        fetch-depth: 1
+    - name: Build site
+      uses: ./
+      with:
+        args: --source docs/ --minify --verbose

README.md

@@ -1,5 +1,7 @@
 # GitHub Action for [Hugo](https://github.com/gohugoio/hugo) ✏️ 
 
+![Build docs](https://github.com/jakejarvis/hugo-build-action/workflows/Build%20docs/badge.svg)
+
 This is a simple GitHub Action that contains [Hugo](https://github.com/gohugoio/hugo), the popular static site generator. The [extended version](https://gohugo.io/troubleshooting/faq/#i-get-tocss-this-feature-is-not-available-in-your-current-hugo-version) is now bundled by default. Unlike other actions, this action includes releases going back to [v0.27](https://github.com/gohugoio/hugo/releases/tag/v0.27) (September 2017) for any compatibility requirements.
 
 ## Usage